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自动内容提取(ACE)是由 NIST 在1999年至2008年间召开的一个研究项目，目的是开发先进的信息抽取/文本分析技术，后续还有 MUC 和之前的文本分析会议。

自动内容提取(ACE)是由 NIST 在1999年至2008年间召开的一个研究项目，目的是开发先进的信息抽取/文本分析技术，后续还有 MUC 和之前的文本分析会议。

==Goals and efforts==

==目标与y==

In general objective, the ACE program is motivated by and addresses the same issues as the MUC program that preceded it. The ACE program, however, defines the research objectives in terms of the target objects (i.e., the entities, the relations, and the events) rather than in terms of the words in the text. For example, the so-called "named entity" task, as defined in MUC, is to identify those words (on the page) that are names of entities. In ACE, on the other hand, the corresponding task is to identify the entity so named. This is a different task, one that is more abstract and that involves inference more explicitly in producing an answer. In a real sense, the task is to detect things that "aren't there".

In general objective, the ACE program is motivated by and addresses the same issues as the MUC program that preceded it. The ACE program, however, defines the research objectives in terms of the target objects (i.e., the entities, the relations, and the events) rather than in terms of the words in the text. For example, the so-called "named entity" task, as defined in MUC, is to identify those words (on the page) that are names of entities. In ACE, on the other hand, the corresponding task is to identify the entity so named. This is a different task, one that is more abstract and that involves inference more explicitly in producing an answer. In a real sense, the task is to detect things that "aren't there".

* 通过评估工具和研究工作坊支持研究。

* 通过评估工具和研究工作坊支持研究。

==Topics and exercises==

==涉及话题与具体内容==

Given a text in [[natural language]], the ACE challenge is to detect:

Given a text in [[natural language]], the ACE challenge is to detect:

# '''entities''' mentioned in the text, such as: persons, organizations, locations, facilities, weapons, vehicles, and geo-political entities.

# '''entities''' mentioned in the text, such as: persons, organizations, locations, facilities, weapons, vehicles, and geo-political entities.

ACE 语料库是测试新的信息抽取算法的标准基准之一。

ACE 语料库是测试新的信息抽取算法的标准基准之一。

==References==

==参考资料==

* George Doddington@NIS T, Alexis Mitchell@LD C, Mark Przybocki@NIS T, Lance Ramshaw@BB N, Stephanie Strassel@LD C, Ralph Weischedel@BB N. [https://web.archive.org/web/20150126022215/http://www.citeulike.org/user/erelsegal-halevi/article/10003935 The automatic content extraction (ACE) program–tasks, data, and evaluation.] 2004

* George Doddington@NIS T, Alexis Mitchell@LD C, Mark Przybocki@NIS T, Lance Ramshaw@BB N, Stephanie Strassel@LD C, Ralph Weischedel@BB N. [https://web.archive.org/web/20150126022215/http://www.citeulike.org/user/erelsegal-halevi/article/10003935 The automatic content extraction (ACE) program–tasks, data, and evaluation.] 2004

==External links==

==外部链接==

* [http://www.itl.nist.gov/iaui/894.02/related_projects/muc/ MUC] - ACE's predecessor.

* [http://www.itl.nist.gov/iaui/894.02/related_projects/muc/ MUC] - ACE's predecessor.

* [http://projects.ldc.upenn.edu/ace/ ACE] {{Webarchive|url=https://web.archive.org/web/20130925194420/http://projects.ldc.upenn.edu/ace/ |date=2013-09-25 }} (LDC)

* [http://projects.ldc.upenn.edu/ace/ ACE] {{Webarchive|url=https://web.archive.org/web/20130925194420/http://projects.ldc.upenn.edu/ace/ |date=2013-09-25 }} (LDC)